docs(deployment): add permissions config to github action file in v2.…

…4.3...

this is already documented in the latest version by commit 35183d7

See also facebook#8877

This is also working for v2.4.3 and needed for using GitHub Pages and Actions with the default setting for the action's automatic GITHUB_TOKEN

website/versioned_docs/version-2.4.3/deployment.mdx

@@ -390,6 +390,9 @@ on:
     # Review gh actions docs if you want to further define triggers, paths, etc
     # https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#on
 
+permissions:
+  contents: write
+
 jobs:
   deploy:
     name: Deploy to GitHub Pages